Home / 39,777.57-54,893.04-21,873.72

Finding the Fourth Proportional to 39,777.57, 54,893.04 and 21,873.72

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Solution

The fourth proportional to 39,777.57, 54,893.04 and 21,873.72 is: 30,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,777.57 : 54,893.04 = 21,873.72 : x
  2. Step 2: Convert to fraction form
    39,777.57/54,893.04 = 21,873.72/x
  3. Step 3: Cross multiply
    39,777.57x = 54,893.04 × 21,873.72
  4. Step 4: Simplify right side
    39,777.57x = 1,200,714,986.91
  5. Step 5: Solve for x
    x = 1,200,714,986.91/39,777.57
  6. Step 6: Final answer
    x = 30,185.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.